【Youshouldsay"Thankyou"whensomeonepassesyouthesaltonthetable,whensomeonewalkingbeforeyoukeepthedooropenforyou,whensomeonesaysyouhavedoneyourworkwell,youhaveboughtanicething,oryourcityisverybeautiful.(1~2)1.】
Youshouldsay"Thankyou"whensomeonepassesyouthesaltonthetable,whensomeonewalkingbefore
youkeepthedooropenforyou,whensomeonesaysyouhavedoneyourworkwell,youhaveboughtanicething,oryourcityisverybeautiful.(1~2)
1.为什么whensomeonesays中用says而不用saying,况且上文也有whensomeonewalkingbeforeyoukeepthedooropenforyou
(难道是句中的before可是都是介词后的动词加ing呀)
2.为什么whensomeonewalkingbeforeyoukeepthedooropenforyou中要用keep而不用keeping,句子中不是有before吗
3.HaveyourparentsflowntoShanghai?
Yes.Theywenttheretoseethefashionshow.
问句中为什么用现在完成时,答句中用过去时.